thanks for watching us. you can catch me on "after the bell" on the fox business network. >>> hello, i'm gregg jarrett. welcome to america's news headquarters. brand-new reaction to iran's nuclear deal. this agreement reached by iran, the united states and five world powers calls for tehran to curb its nuclear activities for six months in exchange for easing of some sanctions. however, not everyone is happy with this deal. national security correspondent jennifer griffin live in washington with more. jennifer. >> gregg, differences are emerging over the interpretation of what the deal does and doesn't do.